package com.zerui.manager.app.scheduler.utils;


import com.zerui.manager.app.scheduler.bean.JobBean;
import com.zerui.manager.app.scheduler.bean.ScheduleConstants;
import com.zerui.manager.app.scheduler.exception.JobTaskException;
import com.zerui.manager.app.scheduler.quartz.QuartzDisallowConcurrentExecution;
import com.zerui.manager.app.scheduler.quartz.QuartzJobExecution;
import com.zerui.manager.common.util.SpringContextTools;
import org.apache.commons.lang3.StringUtils;
import org.quartz.*;

/**
 * 调度工具类
 */
public class ScheduleUtils {
    /**
     * 得到quartz任务类
     *
     * @param jobBean 执行计划
     * @return 具体执行任务类
     */
    private static Class<? extends Job> getQuartzJobClass(JobBean jobBean) {
        boolean isConcurrent = "0".equals(jobBean.getConcurrent());
        return isConcurrent ? QuartzJobExecution.class : QuartzDisallowConcurrentExecution.class;
    }

    /**
     * 构建任务触发对象
     */
    public static TriggerKey getTriggerKey(Long jobId, String jobGroup) {
        return TriggerKey.triggerKey(ScheduleConstants.TASK_CLASS_NAME + jobId, jobGroup);
    }

    /**
     * 构建任务键对象
     */
    public static JobKey getJobKey(Long jobId, String jobGroup) {
        return JobKey.jobKey(ScheduleConstants.TASK_CLASS_NAME + jobId, jobGroup);
    }

    /**
     * 创建定时任务
     */
    public static void createScheduleJob(Scheduler scheduler, JobBean job) throws SchedulerException
            , JobTaskException {
        Class<? extends Job> jobClass = getQuartzJobClass(job);
        // 构建job信息
        Long jobId = job.getJobId();
        String jobGroup = job.getJobGroup();
        JobDetail jobDetail = JobBuilder.newJob(jobClass).withIdentity(getJobKey(jobId, jobGroup)).build();

        // 表达式调度构建器
        CronScheduleBuilder cronScheduleBuilder = CronScheduleBuilder.cronSchedule(job.getCronExpression());
        cronScheduleBuilder = handleCronScheduleMisfirePolicy(job, cronScheduleBuilder);

        // 按新的cronExpression表达式构建一个新的trigger
        CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity(getTriggerKey(jobId, jobGroup))
                .withSchedule(cronScheduleBuilder).build();

        // 放入参数，运行时的方法可以获取
        jobDetail.getJobDataMap().put(ScheduleConstants.TASK_PROPERTIES, job);

        // 判断是否存在
        if (scheduler.checkExists(getJobKey(jobId, jobGroup))) {
            // 防止创建时存在数据问题 先移除，然后在执行创建操作
            scheduler.deleteJob(getJobKey(jobId, jobGroup));
        }

        scheduler.scheduleJob(jobDetail, trigger);

        // 暂停任务
        if (job.getStatus().equals(ScheduleConstants.Status.NORMAL.getValue())) {
            job.setStatus(ScheduleConstants.Status.PAUSE.getValue()); // 暂停
            scheduler.pauseJob(ScheduleUtils.getJobKey(jobId, jobGroup));
        }
    }

    /**
     * 是否存在指定任务
     *
     * @return
     */
    public static Boolean existJob(Scheduler scheduler, Long jobId, String jobGroup) throws SchedulerException {
        return scheduler.checkExists(getJobKey(jobId, jobGroup));
    }

    /**
     * 开始指定的任务
     *
     * @return
     */
    public static Boolean startJob(Scheduler scheduler, long jobId, String jobGroup) throws SchedulerException {
        if (ScheduleUtils.existJob(scheduler, jobId, jobGroup)) {
            scheduler.resumeJob(ScheduleUtils.getJobKey(jobId, jobGroup));
            return true;
        }
        return false;
    }

    /**
     * 停止指定的任务
     *
     * @return
     */
    public static Boolean stopJob(Scheduler scheduler, Long jobId, String jobGroup) throws SchedulerException {
        if (ScheduleUtils.existJob(scheduler, jobId, jobGroup)) {
            scheduler.pauseJob(ScheduleUtils.getJobKey(jobId, jobGroup));
        }
        return true;
    }

    /**
     * 删除任务
     */
    public static Boolean deleteJob(Scheduler scheduler, Long jobId, String jobGroup) throws SchedulerException {
        // 判断是否存在
        if (scheduler.checkExists(getJobKey(jobId, jobGroup))) {
            scheduler.pauseJob(getJobKey(jobId, jobGroup)); // 暂停任务
            scheduler.deleteJob(getJobKey(jobId, jobGroup)); // 删除任务
        }
        return true;
    }

    /**
     * 开始执行任务
     */
    public static Boolean executeJob(Scheduler scheduler, long jobId, String jobGroup) throws SchedulerException {
        if (scheduler.checkExists(getJobKey(jobId, jobGroup))) {
            scheduler.triggerJob(ScheduleUtils.getJobKey(jobId, jobGroup));
            return true;
        }
        return false;
    }

    /**
     * 设置定时任务策略
     */
    public static CronScheduleBuilder handleCronScheduleMisfirePolicy(JobBean job, CronScheduleBuilder cb)
            throws JobTaskException {
        switch (job.getMisfirePolicy()) {
            case ScheduleConstants.MISFIRE_DEFAULT:
                return cb;
            case ScheduleConstants.MISFIRE_IGNORE_MISFIRES:
                return cb.withMisfireHandlingInstructionIgnoreMisfires();
            case ScheduleConstants.MISFIRE_FIRE_AND_PROCEED:
                return cb.withMisfireHandlingInstructionFireAndProceed();
            case ScheduleConstants.MISFIRE_DO_NOTHING:
                return cb.withMisfireHandlingInstructionDoNothing();
            default:
                throw new JobTaskException("The task misfire policy '" + job.getMisfirePolicy()
                        + "' cannot be used in cron schedule tasks", JobTaskException.Code.CONFIG_ERROR);
        }
    }

    /**
     * 检查包名是否为白名单配置
     *
     * @param invokeTarget 目标字符串
     * @return 结果
     */
    public static boolean whiteList(String invokeTarget) {
        String packageName = StringUtils.substringBefore(invokeTarget, "(");
        int count = StringUtils.countMatches(packageName, ".");
        if (count > 1) {
            return StringUtils.containsAny(invokeTarget, ScheduleConstants.JOB_WHITELIST_STR);
        }
        Object obj = SpringContextTools.getBean(StringUtils.split(invokeTarget, ".")[0]);
        return StringUtils.containsAny(obj.getClass().getPackage().getName(), ScheduleConstants.JOB_WHITELIST_STR);
    }


}
